Jewel setter



mm. 13, m23. 11,445,595

' J. R. JARRELL. ET l- JEWEL SETTER Filed Apr. :3, 1922 llliikereferenre-characters refer lis a plan View;

fottlie table; and o lli-pg! 4t 1s a View of parts as seen when thereellen een. la,

ini-rn i Maaate are A P er JEWEL sn'rriega.

application aiaapm 3,

`lie it known that we, li-mns li. .liiunenn and .l l? Jamzine@ citizensot the United titltes, residing at Durant, in the eounty .lryanandtttato ol llklal'ioma, have in.- vented f ertain new and useful`lmpriwements in Jewel 'iietters, el which the lollfmfinggj is aspecification. p

""Llhis invention. provides a device for use by watchmalters,insti'mirent-makers, repairers, and others `in the setting' et jewels intimepieres and other instruments.

lt is an object olithe invention so to a1:-` ranige the parts et suchadeifice that the :letting ot the jewels or stones is facilitated 4andso tl'lat they may be set accurately;

whereinl an" embodimentot the inrentionis` disclosed, for purposes otillustration.

Although the disclosures hereinexempliiy `what now is considered to be ameter-able `embedimengt ol' the inventionyit `is to be un-(ilerstoodthat it not the intention to be limited necessarily thereto inllnterpretation oi" the claims, as modilicatitms and adapta-"tionswitliin the limits of the claims can be I inadewithout departingfrom the nature oil `the invention.

to corresponding parts in the" views of the draw-` ings, of whichf f iFig. 2 isa sectionon the line 2`-2, liig. 1;

llig. 3 isaview ot the `inner or underside tablewis omitted. i

Having more particular reference to the drawing@ designates a basemember oli' any suitable electrically insulating,` material arranged tobe placed on or secured toa bench, work-table, or other suitablesupport. In the present embodiment,` the base member constitutes` thetop oi' a box or case 6.

.A metallic plate or washer 7 is held ons.

et the recess 1G... Each Lot the clanupiimv 1922. Serial No. ilfl.

the `inner side of the base by nuts 8 on a threaded shank portion 9 oita metallic standard or supporting member l0, the nutskeep- .inn1 ashoulder ll of the standard against the oppositeor outer side of thebase inv such manner as to permit the standard to turn againstfrictional resistance. The standard projects outwardly from the outerside olf the base,` and it has near its tree or outer end a` shoulderl2, fromwhich entends a `terminal portion 13 of polygonal shape in crosssection and in which tainingfscrew 1.4.. l

lhe terminal V} ortion lf3 ol' the standard is disposed. a re- `extemlsinto a oorrespondinoly shaped open ing in an electrically-insulatiugtable l5, which 1s supported by the standard ina plane substantiallyparallel with thatot the `base and is held thereon by the screw let.`The tableis out away from one ot its edges to afford" an opening` orrecess ltor reception oi parts upon which work is being; pertormfed andtopermit `operation of tools on those parts. A slot yor elongatedopening li" tends through fthe table at .each side ot die recess lr6near the edge oi the table;

Bysuitable tastenings, such ,as screws 18, metallic holding or clamping;members 't9 are swingably mounted intermediately olitheir ends .on the.outer side of the table,l `one `.oi those members beinp; disposed ouleach.

members liasa lingo apiece QOeiLtending ,orti- :wardly with resp. to thetable at .or near the end) opp` site to the `cutewtay edge tirera ot'.`At the oppositeends the olampiing members have extensions 2l `projoutingto` wardxeacl other across the recess lo, and

these.` extensions terminate in inwardily-oi;-

tending jaws 1:22.` A metallic pin or other `suitable part ,23 extendstrom each clamping member through a slot 17 to the opposite or innerside of the table.

Ar metallic memberlias a itlat ,or web portionQll disposed .and clampedbetween `the shoulder 120i `the standard .and the table, theterminal`portion 13 oit' the .standard .extending thronglracolf'iespondingrlyshaped opening inthe web, so thattbe member turnswit-li the standardand table. den .arcuate `:spring @die termedintegnallyfwithnaiid fex` tends from the web 24, and at its free end itengages the part 23 of one of the clamping members.

en arcuate spring 26 at` the opposite side of the recess 16 engages thepart 23 of the device may be employed adiV other clamping member. Thesprings are tensioned to cause the jaws 22 to close and Ato holdpartsbetween them. The spring 2h is connected firmly with a metallic web2i secured to the inner side of the table. and an arcuate metalliccontact-piece 28 extends tl'ierero-m to the opposite side of the table.

The piece 28is arranged to be contacted by a metallic springtern'iiual29 carried b v a metallic support Si() having a threaded shank`55hextendingthrough the basi` and through a metallic plate or washer32, the parts beingl held firmly in place by a nut 35? on the shank. f

The plates or washers and 32, and thus the standard l() and support 20,are eonnected by conductors 34: with any suitable sourceof electricity7as with a batter-i7 35 in the case 6 as shown.

y'Stops 36 and 37 on the table are arranged to Contact with the terminal2S) and limit the turning movement of the table.

As an example of ra manner in wliich the valieouslv. the

setting of a roller-jewel oi' a watch is eirplained, the table being; insuchposition that the piece 28 and the terminal 29 are in contact,y asin the position shown by Fig. l, when anelectric circuit is closedthrough thesprings 25 and 26 and the jaws 22, and

vwhen the recess 16 and the jaws are at the right of .the operator. Theoperator takes the balance-'wheel in his right hand and with the thumband finger ot the other hand pressing thei'inger-pieees 20 opens thejaws of the .clamping members 19 until the roller-table of ythe watchcan be inserted `between the jaws'. Then he places the jewel in the slotin the roller-table, applies gum ,shellac or other suitable thermallyplastic material7 andbv the heat resulting :from the electric currentpassing' through the comparativel;7 high resistance parts between thejaws the material .is melted and Hows around the-jewel. -`When asuilieient aniount .of this material has flown around the jewel toholdit securely, the table 'l5 is turned to the letnntil the arcuatecontact-piece 2S becomes -disengaged from the springt terminal 29 andthecircuit is broken. 'y The table l5 remains in the latter position untilthe lmelted plasticmaterial `cools and hardens,` whereupon the jaws arereleased vfrom I the work and the work removed. vlili the event thejewel has not set in proper position', f the work again lis placedbetween the jaws L and the table 15 is turned to close the circuit andagain soften the plastic jewelholding'` material 'and thus permit thei/ifraoa straigl'itening olf the jewel. 'libe/realtor. the table l5again is turned to open the eirenii and the work removed i'ron'i betweenthe jaws. A pallet stone er jewel may be sr: in a manner similar to thatdescribed 'or a balance-wheel jewel.

Having thus described our invention. what we claim as new. and desire loseeure by Letters Patent. .is-

l. ln a device ot the kind described. :i ro.- tatably-niounted table.work-holding ineinbers thereon in circuit with a sour-e ci' electricity,and means vi'heieh) the eireni is closed when the table is in oneposition and opened when it is turned to another position.

2. In a device of the kind described. a ro tatably-mounted table.work-holding mena bers thereon. an electriecurreiu eondueior connectedwith one ot said nienibers. a contact-pieee on said table, eonneeledwith the other ol4 said members. und :i member eoni'lected with anotherelectric-eurreni con ductor arranged to contact with said roni'act-piceewhen said table is in one position and to be out oi contact therewithwhen said table is turned to another' position.

3. In a device ot the hind described. :i support. a table rotatabl \7mounted there on, work-holding;` members on said table.y anelectrieally-conductive connection between ysaid support and one ot saidmembers. :i

contact-piece on said. table connected with the other 0l said members.and a cont-:rel member mounted independently oi said table arranged tocontact with said contactpiece when said table is in one position and tobe out of contact therewith when said table is turned to anotherposition. said Contact member and said support being in eireuit with asourcefof elect rieitry.

d. `['n a device o': the` kind described, a ro tatably-inoiinted table.wiric-holding ineinbers thereon. springs arranged to impariclampingaelion to and in eoniaei with said members, a eontaet-j'iieee onsaid table eon-Y nect-ed with one of said springs. a eontae( membermounted independent-ly of said table arranged to eontzfrct with saideonl'net-pieee when said table is in one position and to be out ofcontact therewith when said table is turned to another position, andcomluetors connectingsaid contact-piece and said other spring` incireuit with a source oi'Y eleetrieiti'.

In witness whereof. we aflix our signatures.

JAMES R. JARRJCLL. A P JARRELL.

(jfl

